Closure



1937. H. SPENGLER 2,090,646

CLOSURE Filei April 4, 1936 :IIIHIII iwmammimmm f6 INVENTOR.

fi zr/vev SPE/VGLEE.

ATTORNEYS Patented Aug. 24, 1937 UNITED STATES.

PATENT OFFICE CIDSURE Henry Spengler, New York, N. 1., aleignor to Spnmy Cap Corporation, New York, N. Y., a corporation of DelawareApplication April 4, 1936, Serial No. 72,679

4 China. (0!. 215-39) The present invention relates to a closure andparticularly relates to a type of closure to be ap- In the standard typeof closure widely used upon the market today, usually designed as of theCrown type, a relatively soft metal cup is employed, the skirt of whichis tucked inwardly 10 about the bottle or container mouth, a cork diskusually being inserted in thebase of the cup and contacting said lip.

The gathered metal edge which is an inherent characteristic of this typeof cap is usually ll crimped about the upper bead at the top of thebottle by laterally moving jaws, which jaws are positioned so as tocompress the skirt into the recess below said upper head.

In making the bottles, however, it is particum larly diiiicult toregulate exactly the height and depth of the bead and the depth of thegroove there below and unless great care is utilized, a great manybottles are often broken due to the fact that such crimping jaws are notaccurately 95 positioned with respect to the head at the top of thebottle.

In addition, the metal edge when so gathered in the ordinary Crown typeof cap bulges outwardly giving an unsightly appearance at the 30 top ofthe bottle and also forms an outstanding sharp edge, often causinginjury.

It has now been found more readily possible to form bottle tops in whichthe outside diameter of the head will be fairly uniform, although the asdepth of the bead may vary and it is among the objects of the presentinvention to provide an improved bottle'cap for such bottles, in whichthe bottle cap may be secured onto the bottle in a firm and securemanner without the necessity 40 of using lateral clamping jaws, andwhich, at the same time, may also be attached without the usualunsightly appearance and the customary sharp edge.

It is also a further difflculty with the usual 45 type of Crown closurethat when applied only the cork forms a seal, the ridges on the outsideof the cap permitting a free passage into the interior of the cap andalso permitting the escape of gas and entry of the atmosphere in case ofany 50 defect in the cork,

It is, therefore, among the further objects of the present invention toprovide an improved bottle closure in which not only the cork, but alsothe metal skirt will form a tight seal cooperating with each other bothto prevent escape of fluid or gases from the interior of the bottle orcap container and also preventing entry of the atmosphere into thebottle.

Other objects will be obvious and will appear during the course of thefollowing specification.

In accomplishing the above objects, according to one embodiment of theinvention, a cap is formed of a sheet of metal with a circular base anda skirt having an out-turned corrugated portion with an intermediateridge.

The ridge and corrugated portion are adapted to be inwardly pressed by adownwardly moving capping die which will straighten out the ridge and inso doing, press the corrugated portion into the groove below the bead.

By forming the cap in this way, both the upper side of the skirt, aswell as the cork, will be closely pressed upon the side and top of thebead, whereas, the indentations around the lower part of the skirtwillbe forced into the recess below the bead. I The above and otherobjects will appear more clearly from the following detailed descriptionwhen taken inconnection with the accompanying drawing, which illustratesa preferred embodiment of the inventive idea.

Referring to the drawing:

Figure 1 is a side elevational view.

Figure 2 is a cross sectional view upon the line 2-2 of Figure 3.

Figure 3 is a bottom view upon the line 3-3 of Figure 2.

Figure 4 is a cross sectional view of the cap of Figure 1 on the top ofthe bottle and about to be pressed into sealing position upon the top ofthe bottle by a capping die.

Figure 5 is a side elevational view of the cap after attachment to thebottle.

Figure 6 is a cross sectional viewof the cap of Figure 5 when attached,on slightly enlarged scale.

Referring to Figures 1 and 2, the cap has a base ID, with an upper skirtll, an intermediate ridge l2, and a lower skirt l3. The upper skirtportion ll receives the cork disk or insert ll.

' The ridge l2 extends outwardly beyond the upper skirt portion ii toprovide extra metal. The skirt portion l3 consists of a series ofindented portions H, and outwardly extending rounded portions l5.

The cap may be made most conveniently of alloys of tin, brass, copper,aluminum and/or lead.

In attaching the cap of Figures 1 to 3 to the top of the bottle l6,having the bead II, with a lower recess i8, acylindrical die I9 with abevelled lower edge 20 may be employed.

The die id contains an actuating member 2! screwed at 22 into thethreaded recess 23. The 5 cylindrical member I9 also receives the coilspring 24 which presses down the fiat die member 25. The flat member 25has an upstanding nipple 26, which is tapped and receives the bolt 27having the head 28. The bolt passes through the open- 10 ing 29 in thecup 23 and may reciprocate in said cup 23 and also in the recess 36 inthe end of the rod 2|.

In operation, the capping die l9 will come down and the bevel 26 willstrike the extended edge l2 collapsing the metal of the lower portion 13thereof from the position A to the position B until the cylinder reachesthe lower dotted line position, as indicated in Figure 4.

In I the meanwhile, the fiat element 25 will press down upon the baseiii and the cork il holding them in position upon the top of the beadii.

The extension of the ridge 82 will automatically press the metal of thelower skirt l3 into the recess l8 with the result, as shown in Figures 5and 6, that the portions of metal indicated at i2 in Figures 5 and 6corresponding to the extended ridge l2 will be firmly clamped on theoutside of the bead, while the cork will be depressed on the upperportion of the bead ll, as indicated at id in Figure 6.

The attached cap, as shown in Figures 5 and 6,

is devoid of the sharp outstanding edge, has a relatively neatappearance and may be most readily applied by a capping die, such asindicated in Figure 4, with substantial rapidity and less breakage byautomatic machinery.

The caps, as formed in Figures 1 to 3, may ordinarily have a maximumexternal diameter of the ridge E2 of 1 inches, and a maximum depth 40before placement upon the bottle top of inch.

Regardless of the depth of the bead ill, and the location of the recess26, the operation indicated in Figure 4, with straightening out of theridge 12 will cause the lower skirt l3 to collapse 5 around the lowerportion of the bead with the indentations and elevations l6, l5, beingreceived in the recess 58..

It will be noted that the outside of the cap, as shown in Figures 5 and6, after attachment will 50 be substantially cylindrical and a prying orbottle opening tool may be inserted therebelow to lift the cap fromtheitop of the bottle.

The cork disk 341 of the cap of the present invention need not be gluedinto position as is necessary with the usual type of Crown caps sincethe indentations I 6, as best shown in Figure 3, extend inwardlysuficiently to prevent the disk from falling out'of position.

In certain instances steel alloy may also be utilized as a material formaking the cap of the present invention. 1

The usual Crown blank consists of a disc 1 inches in diameter, whereasthe blank for the cap of the present invention may be con- 5 veniently 1inches in diameter.

The cap of the present invention is particularly advantageous inasmuchas it may be more readily removed from the tops of bottles withoutdeformation and may be constructed with a con- 'siderable saving ofmetal over and above the usual Crown type of seal.

It is to be understood, however, that all these variations andalterations as well as any other changes or modifications within thescope of the invention are all to be included herein and the inventionis not to be limited to the specific embodiment above illustratively setforth.

Other forms of the bulged portion or fold are shown in my continuingapplications, Serial No.

' 122,263 filed January25, 1937, and Serial No.

122,630 filed January 28, 1937.

What is claimed is:

l. A cup shaped cap for application to bottles provided with top beadsand similar containers, said cap having a circular base, a skirtdepending circularly from said base, a cylindrical pliable sealing diskinset against said base inside of said skirt, said skirt having acorrugated or indented lower portion, a smooth cylindrical upper portionand an intermediate portion providing extra metal, said intermediateportion taking the form of an outwardly projecting fold, said fold beingadapted to be unfolded and spread to extend said skirt to grip the sideof the bead and force the corrugated portion tightly below the bead.

2. A cup shaped cap forv application to bottles provided with top beadsand similar containers, said cap having a circular base, a skirtdepending circularly from said base, a cylindrical pliable interior ofthe cap between the fold and the base.

3. A cup shaped cap for application to bottles provided with top beadand similar containers, said cap having a circular base, a skirtdepending circularly from said base, a cylindrical pliable sealing diskinset against said base inside of said skirt, said skirt having acorrugated or indented lower portion, a smooth cylindrical upper portionand an intermediate portion providing extra metal, said intermediateportion taking the form of an outwardly projecting fold, said fold beingadapted to be unfolded and spread to extend said skirt to grip the sideof the bead and force the corrugated portion tightly below the bead,said corrugated lower portion having inwardly extending parts projectinginside of the periphery of said disk, whereby said disk is held inposition.

4. A cup-shaped cap for application to containers provided with topbeads, said cap having a circular base, a skirt extending circularlyfrom the periphery of said base, and a pliable sealing disk insetagainst said base inside of said skirt, said skirt being providedintermediate of its length with an outwardly projecting bulged portionadapted to be spread to extend the skirt in the direction of the axis ofthe cap and said skirt having corrugations or indentations between saidbulged portion and the edge of said skirt which are adapted to collapsecircumferentially during the extension of said bulged portion, to griptightly below the head, but which are retained generally in an axialdirection, to facilitate engagement of an uncapping element therewith,by the union circumferentially of contiguous corrugations orindentations.

HENRY SPENGLER.

